摘要:

AbstractA geometrical optics approach is used to analyse the reflection of a divergent beam falling onto a concave or convex surface. The polarisation state of a ray in the incident beam depends on the position where the ray impinges upon the surface. The distribution of transmittance over the surface for different polarisation states is determined. An integration of the transmittance distribution determines the total reflection loss of a coupling lens used in a laser diode to single‐mode fibre coupling syste

ISSN:1057-9257    

DOI:10.1002/(SICI)1099-0712(199607)6:4<163::AID-AMO233>3.0.CO;2-S

出版商:John Wiley&Sons Ltd.    

年代:1996

数据来源: WILEY

摘要:

AbstractTwo volatile β‐diketonato complexes of trivalent cerium, Ce(thd)3phen and Ce(tpm)3, were prepared and characterised with TG, DTA, FTIR and MS and used in ALE processing of electroluminescent SrS:Ce thin films. The results were compared with those obtained with the typically used precursor Ce(thd)4. TG measurements were employed to simulate the precursor vaporisation in ALE. The most interesting results were the enhanced electroluminescence obtained with Ce(thd)3phen and the colour shift towards blue with the fluorinated precursor Ce(tpm)3. With the latter precursor the luminance was poor and the growth rate of SrS was decreased as we

ISSN:1057-9257    

DOI:10.1002/(SICI)1099-0712(199607)6:4<169::AID-AMO234>3.0.CO;2-7

出版商:John Wiley&Sons Ltd.    

年代:1996

数据来源: WILEY

摘要:

AbstractMolecular‐precursor chemistry provides an essential underpinning to all electronic materials technologies, including photovoltaics and related areas of direct interest to energy capture and conversion. Materials synthesis and processing is a rapidly developing field in which advances in molecular precursors are playing a major role. This article surveys selected recent research examples that define the exciting current directions in molecular precursor science. These directions include growth of increasingly complex structures and stoichiometries, surface‐selective growth, kinetic growth of metastable materials, growth of size‐controlled quantum dots and quantum dot arrays and growth at progressively lower temperatures. Continued progress in molecular precursor chemistry will afford precise control over the crystal structures, nanostructures and microstructures of electronic mate

ISSN:1057-9257    

DOI:10.1002/(SICI)1099-0712(199607)6:4<175::AID-AMO236>3.0.CO;2-C

出版商:John Wiley&Sons Ltd.    

年代:1996

数据来源: WILEY

摘要:

AbstractThe reaction between GaCl3and Sb(SiMe3)3in a 1:1 mole ratio at 110°C in toluene leads to gallium antimonide, GaSb, which has been characterised by electron diffraction studies and EDX and elemental analyses. Microscopy studies (SEM and TEM) show the formation of nanocrystals with a predominant crystal size of 20–30

ISSN:1057-9257    

DOI:10.1002/(SICI)1099-0712(199607)6:4<185::AID-AMO237>3.0.CO;2-8

出版商:John Wiley&Sons Ltd.    

年代:1996

数据来源: WILEY

摘要:

AbstractIn the paper we show how to approximate the Voronoi diagram of a finite set of planar points in a chemical processor consisting of an agar‐palladium thin layer and potassium iodide liquid diffusing on it. The configuration of a given point set is represented by the spatial distribution of Kl drops and the bisectors of the required Voronoi diagram are computed according to the PdCl2+ 2Kl = Pdl2↓ + 2

ISSN:1057-9257    

DOI:10.1002/(SICI)1099-0712(199607)6:4<191::AID-AMO238>3.0.CO;2-G

出版商:John Wiley&Sons Ltd.    

年代:1996

数据来源: WILEY

摘要:

AbstractA novel process using chitosan containing ligand groups as a medium for forming CdS clusters in chitosan films by an ion co‐ordinate method has been investigated. The CdS clusters in the chitosan have been identified by X‐ray diffraction and by their infrared, ultraviolet and visible absorption spectra and shown to possess high stability with a specific structure. Notable quantum size effects have been shown through their absorption spectra. By changing the reaction conditions, the wavelength edge of the absorption can be blue‐shifted from 470 to 3

ISSN:1057-9257    

DOI:10.1002/(SICI)1099-0712(199607)6:4<197::AID-AMO240>3.0.CO;2-L

出版商:John Wiley&Sons Ltd.    

年代:1996

数据来源: WILEY

摘要:

AbstractThe optical absorption characteristics of vacuum‐deposited thin films of erbium and dysprosium diphthalocyanine were investigated using transmission spectroscopy before and after exposure to chlorine gas and compared with previous work performed upon lead monophthalocyanine (PbPc). Considerable red shifts in the visible absorption spectra were observed after Cl2exposure for the diphthalocyanines but not for the monophthalocyanine. These were interpreted on the basis of differences in molecular structure in relation to the adsorption of chlorin

ISSN:1057-9257    

DOI:10.1002/(SICI)1099-0712(199607)6:4<203::AID-AMO241>3.0.CO;2-#

出版商:John Wiley&Sons Ltd.    

年代:1996

数据来源: WILEY

ISSN:1057-9257    

DOI:10.1002/(SICI)1099-0712(199607)6:4<211::AID-AMO239>3.0.CO;2-I

出版商:John Wiley&Sons Ltd.    

年代:1996

数据来源: WILEY

ISSN:1057-9257    

DOI:10.1002/amo.860060410

出版商:John Wiley&Sons Ltd.    

年代:1996

数据来源: WILEY

ISSN:1057-9257    

DOI:10.1002/amo.860060401

出版商:John Wiley&Sons Ltd.    

年代:1996

数据来源: WILEY